Top-rated thermostat installers and replacers.

Get matched with top thermostat installers and replacers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Thermostat installers and replacers in Nassau

Avatar for Ivey Electric
Ivey Electric
404 McChesney Avenue
4.76(
70
)
Approved Pro
Ivey Electric
404 McChesney Avenue
4.76(
70
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
9 years of experience

At Ivey Electric, we pride ourselves on providing quality service that customers can believe in. We will always see the project through to the customers satisfaction. Call us for a free estimate and to get a professional out to your home today!

"Started the project, was not available when needed, took a 50% deposit and never finished my work. When asked for a refund he claimed he did not have the money to pay me back so we will be heading to court. He hides behind his phone and would not return my calls."

Carlos B on May 2022

At Ivey Electric, we pride ourselves on providing quality service that customers can believe in. We will always see the project through to the customers satisfaction. Call us for a free estimate and to get a professional out to your home today!

"Started the project, was not available when needed, took a 50% deposit and never finished my work. When asked for a refund he claimed he did not have the money to pay me back so we will be heading to court. He hides behind his phone and would not return my calls."

Carlos B on May 2022


Highline Quality Services
298 4th Avenue
4.83(
3
)
Approved Pro
Highline Quality Services
298 4th Avenue
4.83(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

We take great pride in our 3 years of experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Hired Lewis to check out electrical in my older mobile home had to update panel box spent numerous hours here trying to troubleshoot electrical problems. Went over and above to try to solve the problem"

Sharon W on December 2024

We take great pride in our 3 years of experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Hired Lewis to check out electrical in my older mobile home had to update panel box spent numerous hours here trying to troubleshoot electrical problems. Went over and above to try to solve the problem"

Sharon W on December 2024


Avatar for Grasshopper Heating & Cooling
Grasshopper Heating & Cooling
16 Fairchild Square
4.80(
108
)
Approved Pro
Grasshopper Heating & Cooling
16 Fairchild Square
4.80(
108
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
72 local quotes requested

Thank you for choosing Grasshopper Heating & Cooling! Our name accurately reflects some of our values: forward moving, quick to respond, and green! This has further energized our mission: To Provide Sustainable Efficient Solutions Focused on Advancing Comfort & Cultivating Community. We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in heating and furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results & look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"The techs were good but $1100 for a thermostat repair is outrageous even subtracting the $400 emergency for a Saturday job. The salesman struggled to justify the numbers. Due to this experience I will not consider Grasshopper for a large upcoming project (AC heat pump)."

Seth D on December 2024

Thank you for choosing Grasshopper Heating & Cooling! Our name accurately reflects some of our values: forward moving, quick to respond, and green! This has further energized our mission: To Provide Sustainable Efficient Solutions Focused on Advancing Comfort & Cultivating Community. We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in heating and furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results & look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"The techs were good but $1100 for a thermostat repair is outrageous even subtracting the $400 emergency for a Saturday job. The salesman struggled to justify the numbers. Due to this experience I will not consider Grasshopper for a large upcoming project (AC heat pump)."

Seth D on December 2024


Avatar for Crisafulli Bros. Home Services
Crisafulli Bros. Home Services
25 Industrial Park Rd
New on HomeAdvisorNew on Angi
Approved Pro
Crisafulli Bros. Home Services
25 Industrial Park Rd
New on AngiNew on HomeAdvisor
Approved Pro
28 local quotes requested
86 years of experience

For over 80 years, Crisafulli Bros. Plumbing & Heating Contractors, Inc. has provided plumbing, sewer and drain, heating and cooling design, installation, service, scheduled maintenance, and electrical services to our clientele. Founded in 1939, our company now spans three generations combining the pride and craftsmanship you expect from a locally owned and operated family business with the resources and knowledge available from a large national company. With a growing workforce and a fleet of vehicles driving around every upstate NY neighborhood, Crisafulli Bros. is one of the largest mechanical contracting companies in the Capital Region. Our vast resources and commitment to quality led to us being recognized as the Best of the Capital Region for over 16 straight years and named a Top Work Place. We have set the standard for plumbing, heating, cooling, and electrical craftsmanship in the region.

For over 80 years, Crisafulli Bros. Plumbing & Heating Contractors, Inc. has provided plumbing, sewer and drain, heating and cooling design, installation, service, scheduled maintenance, and electrical services to our clientele. Founded in 1939, our company now spans three generations combining the pride and craftsmanship you expect from a locally owned and operated family business with the resources and knowledge available from a large national company. With a growing workforce and a fleet of vehicles driving around every upstate NY neighborhood, Crisafulli Bros. is one of the largest mechanical contracting companies in the Capital Region. Our vast resources and commitment to quality led to us being recognized as the Best of the Capital Region for over 16 straight years and named a Top Work Place. We have set the standard for plumbing, heating, cooling, and electrical craftsmanship in the region.


Matts Fix It All LLC
Located In Glenmont, NY
5.00(
12
)
Approved Pro
Matts Fix It All LLC
Located In Glenmont, NY
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
656 local quotes requested

Looking for reliable home services in Albany? Look no further than Matts Fix It All LLC. With over 20 years of experience, we specialize in plastering and handyman work. From small household issues to larger projects, we've got you covered. Rest easy knowing we're insured for your peace of mind. Contact us today!

"My husband and I were very happy with the job!"

Charlotte B on April 2025

Looking for reliable home services in Albany? Look no further than Matts Fix It All LLC. With over 20 years of experience, we specialize in plastering and handyman work. From small household issues to larger projects, we've got you covered. Rest easy knowing we're insured for your peace of mind. Contact us today!

"My husband and I were very happy with the job!"

Charlotte B on April 2025


Avatar for Smart Fixers LLC
Smart Fixers LLC
385 10th Street
4.64(
11
)
Approved Pro
Smart Fixers LLC
385 10th Street
4.64(
11
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
521 local quotes requested

Get your minor demolition, remodeling of your property and general handyman service done by Smart Fixers LLC. we take pride in getting your work done right the first time.

"Smart Fixers did high quality work for us at affordable prices. We initially hired them to do drywall. But it turned out they had skills to do every need that came up including window installation, carpentry. Painting, and plaster work. Every new challenge that arose in our new old house was met with sensible Solitions. The lead person we worked with was flexible with the ever-changing scope of the work and always remained positive. He was willing to make changes based on our feedback. He was reliable, productive and even worked some weekends to make our deadlines. He is our go-to guy now on home projects and we recommend him highly."

Marion R on November 2024

Get your minor demolition, remodeling of your property and general handyman service done by Smart Fixers LLC. we take pride in getting your work done right the first time.

"Smart Fixers did high quality work for us at affordable prices. We initially hired them to do drywall. But it turned out they had skills to do every need that came up including window installation, carpentry. Painting, and plaster work. Every new challenge that arose in our new old house was met with sensible Solitions. The lead person we worked with was flexible with the ever-changing scope of the work and always remained positive. He was willing to make changes based on our feedback. He was reliable, productive and even worked some weekends to make our deadlines. He is our go-to guy now on home projects and we recommend him highly."

Marion R on November 2024


Avatar for One Peace, LLC
One Peace, LLC
16 Spring Avenue
4.80(
5
)
Approved Pro
One Peace, LLC
16 Spring Avenue
4.80(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
594 local quotes requested

At One Peace LLC, we understand that your home is more than just a place—it's a sanctuary. Specializing in providing reliable and high-quality repair services, we are dedicated to helping homeowners maintain the beauty and functionality of their homes. Our team of skilled professionals brings years of experience, ensuring that every project is completed with precision and care. Whether it's a small repair or a major renovation, we approach every task with the same commitment to excellence. Why Choose One Peace LLC? Expertise You Can Trust: With a proven track record in home repair services, we deliver solutions that stand the test of time. Customer-Centric Approach: Your satisfaction is our priority. We work closely with you to understand your needs and exceed your expectations. Transparent and Fair Pricing: We believe in honest and upfront pricing, so you know exactly what to expect. Prompt and Reliable Service: We value your time and ensure timely completion of all projects without compromising on quality. Join the many satisfied homeowners who have experienced the peace of mind that comes with choosing One Peace LLC. Let us be your partner in creating a home that reflects your style and meets your needs. Contact us today for a consultation and discover how we can bring your home improvement vision to life!

"Outstanding. Joe arrived in the morning and worked the entire day. He worked both inside and outside. He installed a heater fan in the bathroom ceiling, repaired two ceiling with water damage, installed a new storm door and repaired en exterior window frame that had multiple areas that were rotting. He is easy going and hard working. I will definitely be hiring him again."

Kelly R on June 2025

At One Peace LLC, we understand that your home is more than just a place—it's a sanctuary. Specializing in providing reliable and high-quality repair services, we are dedicated to helping homeowners maintain the beauty and functionality of their homes. Our team of skilled professionals brings years of experience, ensuring that every project is completed with precision and care. Whether it's a small repair or a major renovation, we approach every task with the same commitment to excellence. Why Choose One Peace LLC? Expertise You Can Trust: With a proven track record in home repair services, we deliver solutions that stand the test of time. Customer-Centric Approach: Your satisfaction is our priority. We work closely with you to understand your needs and exceed your expectations. Transparent and Fair Pricing: We believe in honest and upfront pricing, so you know exactly what to expect. Prompt and Reliable Service: We value your time and ensure timely completion of all projects without compromising on quality. Join the many satisfied homeowners who have experienced the peace of mind that comes with choosing One Peace LLC. Let us be your partner in creating a home that reflects your style and meets your needs. Contact us today for a consultation and discover how we can bring your home improvement vision to life!

"Outstanding. Joe arrived in the morning and worked the entire day. He worked both inside and outside. He installed a heater fan in the bathroom ceiling, repaired two ceiling with water damage, installed a new storm door and repaired en exterior window frame that had multiple areas that were rotting. He is easy going and hard working. I will definitely be hiring him again."

Kelly R on June 2025


Avatar for Reid’s Painting & Handyman Services
Reid’s Painting & Handyman Services
417 South Pearl Street
4.95(
20
)
Approved Pro
Reid’s Painting & Handyman Services
417 South Pearl Street
4.95(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1062 local quotes requested

We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"It was a big assembly -- they stuck with it and the final product was beautiful!"

Connie M on June 2025

We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"It was a big assembly -- they stuck with it and the final product was beautiful!"

Connie M on June 2025


Avatar for Deering Handyman Services, LLC
Deering Handyman Services, LLC
4.62(
39
)
Approved Pro
Deering Handyman Services, LLC
4.62(
39
)
Approved Pro
Customers say: Quality work
687 local quotes requested
Free onsite estimate

Are you looking for a handyman who takes pride in his work? Call or message for small and large projects that will be done right and on schedule. Friendly, quality, reliable and on time. Free estimates and affordable pricing.

"Very well. It was done in a timely manner and it came out perfect!"

Tina T on April 2025

Are you looking for a handyman who takes pride in his work? Call or message for small and large projects that will be done right and on schedule. Friendly, quality, reliable and on time. Free estimates and affordable pricing.

"Very well. It was done in a timely manner and it came out perfect!"

Tina T on April 2025


Avatar for Crisafulli Bros. Home Services
Crisafulli Bros. Home Services
119 Warren Street
4.59(
61
)
Approved Pro
Crisafulli Bros. Home Services
119 Warren Street
4.59(
61
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
968 local quotes requested

At Crisafulli Bros., we provide expert plumbing, heating, cooling, and electrical services throughout Upstate New York. Since 1939 our technicians combine the craftsmanship you’d expect from a locally owned family business with the resources and knowledge available from a large national company to ensure your home is safe, comfortable and efficient.

"Technician Jordan Thomas was on time, professional, friendly. Performed furnace cleaning quickly and removed all replaced filters. Explained work performed. Work was done under a service contract so no charge."

Jim D on October 2024

At Crisafulli Bros., we provide expert plumbing, heating, cooling, and electrical services throughout Upstate New York. Since 1939 our technicians combine the craftsmanship you’d expect from a locally owned family business with the resources and knowledge available from a large national company to ensure your home is safe, comfortable and efficient.

"Technician Jordan Thomas was on time, professional, friendly. Performed furnace cleaning quickly and removed all replaced filters. Explained work performed. Work was done under a service contract so no charge."

Jim D on October 2024

...
Showing 1-10 of 402

FAQs for thermostat installation and replacement projects in Nassau, NY

It's often worth replacing your old thermostat with a newer model that can enhance your home's comfort and energy efficiency. Upgrading to a programmable or smart thermostat can save you up to $200 per year on energy bills. Plus, smart thermostats offer convenient features like remote control and learning capabilities, making your home more comfortable and easier to manage.

Signs of a bad thermostat include your HVAC system not turning on when it's supposed to or failing to reach the desired temperature. If the thermostat's display is blank or not functioning properly, it could be malfunctioning. Another indicator is the HVAC system running continuously without shutting off or cycling on and off too frequently. You might also notice uneven temperatures throughout your home, with some rooms being too warm or too cold. These issues suggest that the thermostat is failing and may need repair or replacement to ensure your HVAC system operates efficiently.

A thermostat should last between 10 to 20 years, depending on its quality and how well it's maintained. Over time, dust, wiring issues, and general wear can affect its performance. Even if a thermostat is still functioning after 10 years, you might choose to replace it to take advantage of newer energy-saving technologies and smart home integrations. Upgrading to a modern thermostat can improve efficiency, offer more control over your home's climate, and potentially lower energy bills.

The number of thermostats you need depends on your home's size, layout, and heating and cooling zones. In a standard single-zone HVAC system, one thermostat controls the temperature for the entire home. However, larger homes or those with multiple floors might benefit from multiple thermostats linked to a multi-zone HVAC system. This setup can offer better comfort and energy efficiency: It lets you customize the temperature in different areas, so you're only heating or cooling the spaces you're using.

Replacing a thermostat typically takes a professional technician about one to two hours to complete. If you're swapping out an existing thermostat for a similar model with compatible wiring, the process can be done in less than an hour. However, installing a new thermostat that requires additional wiring, such as a smart thermostat, or moving the thermostat to a new location can extend the time to two hours or more. Complex installations may also involve cutting into drywall or integrating with other home systems, which can add to the duration.

There are a few things that can cause your home thermostat to fail. The most simple one is age and cleanliness. Dirt, grease, dust, and other small particles can clog sensors and cause malfunctions in readings. You may also have a failing power supply and loose connections, and the simplest cause is that it isn't installed in the right place in your home so it can't properly sense air temperature. Repairing a thermostat costs around $210.

The Nassau, NY homeowners’ guide to thermostat installations and replacements
From average costs to expert advice, get all the answers you need to get your job done.
heat pumps installed on the side of a brick house
Jun 23, 2025
Jun 23, 2025
Use this guide to estimate heat pump costs based on factors like system size, type, efficiency rating, and location.
technician repairing solar panel on roof
Apr 30, 2025
Apr 30, 2025
Budget for solar panel repair costs based on factors such as system type, panel size, accessibility, repair type, labor, parts, inspections, and more.
new solar panels installed on roof of home
Apr 30, 2025
Apr 30, 2025
Budget for solar panel installation costs based on factors such as system size, panel type, electrical requirements, location, rebates, maintenance, and more.
Aerial view of a Solar photovoltaic panels on a wood house roof surrounded by green vegetation
Nov 18, 2022
Nov 18, 2022
HomeAdvisor’s Solar Panel Cost Guide explores the cost of solar panels in California. Use our guide to find out how much solar panels cost in your city.
heat pump being repaired on the side of house
Apr 19, 2025
Apr 19, 2025
Use this guide to budget for heat pump repair costs based on factors such as problem type, part, heat pump type, professional labor, and more.
HVAC return air wall register vent
Apr 16, 2025
Apr 16, 2025
Wondering about ductwork installation costs for your home? Explore pricing breakdowns by material type, home size, and testing requirements.
Share project details to get started.